Involuntary head shaking

Four to five years ago, my mother woke up at night because she was shaking her head. During the CT scan, the doctors could not determine the cause of the shaking. They also could not help her with this condition. The shaking was very uncomfortable for her. One year ago, she called you and received prayer. One to two weeks later, the shaking stopped, and she got well. By then, her head had been shaking for three to four years.